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Measured on six things

Check your prop firm consistency rule and best-day percen...

Growth

A real, specific pain — payout-denial anxiety over consistency rules — with a genuine wedge: 22 firms / 97 plan presets linked to official sources that TradingView, Edgewonk and TradeZella don't natively apply.

Screenshots

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Prop Firm Consistency Calculator

About this app

Prop Firm Consistency is a free calculator for funded traders. Enter your daily profits to check your prop firm consistency rule: it calculates your best-day percentage, the total profit required to satisfy the rule and the remaining gap before you can request a payout. Plan-specific presets link to each firm's official rule source, so you can check the exact threshold for your evaluation or funded account instead of guessing.

Key features

1Consistency calculator: best-day percentage, required profit and remaining gap from daily P&L.
222 prop firms / 97 plan presets with links to each firm's official rule source.
3Client-side privacy — figures stay in the browser, no signup or account connection.
4'What if?' preview to test hypothetical trading days without changing actual entries.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Prop firm traders (futures & forex)

Pain points

Unsure if best-day profit violates consistency rule; risk of payout denial

Primary needs

Quick, accurate consistency percentage check per firm

Demographic

Traders managing multiple prop firm accounts

Pain points

Different rules per firm/plan; manual math is error-prone

Primary needs

Unified calculator with plan-specific presets and source links

Demographic

New funded traders in evaluation phase

Pain points

Confusion over profit denominators and boundary conditions

Primary needs

Clear explanation and guidance on how much more profit is needed

Scout Review

Written by AI from measured evidence, scored out of 100.

Prop Firm Consistency Calculator does one thing and does it well: it turns the anxiety of 'is my best day too big for this firm's rule?' into a percentage, a required-profit figure and a remaining gap. The execution is above-average for an indie tool — fast (97 mobile Lighthouse), zero-signup, client-side privacy, and a genuinely useful 22-firm / 97-rule preset library with official source links. The rough edges are cosmetic and fixable: an unlabeled hero chart, a noisy comparison table, two accessibility audit failures, and missing HSTS/DMARC. It's not trying to be a trading journal or a charting platform, and that focus is its strength. The open question is whether a free calculator can grow into anything more — but as a utility, it earns its place.

Measure by measure

Usability

No signup, clear input/result split, helpful microcopy, a 'What if?' preview and plan presets linked to official sources. Onboarding is essentially zero-friction for a single-purpose tool.

Design

Clean card-based calculator with a teal result highlight and a dense but readable 22-firm comparison table. The hero chart's four unlabeled bar colors and repeated 'Some plans: no limit' rows add avoidable noise.

Speed

Lighthouse mobile 97/100 (LCP 1.5s, CLS 0, TBT 0ms) and desktop 100/100. Client-side calculation keeps the page featherweight with no heavy SPA payload.

Security

HTTPS enforced with CSP, frame protection and a full header set (9/12 checklist). Missing HSTS and DMARC. No SOC 2 or audit claims, but figures stay client-side with no account connection.

Accessibility

Lighthouse accessibility 97/100 with a skip link and labeled fields, but two failing audits: insufficient color contrast and visible labels not matching accessible names. English-only, no a11y statement.

Growth

Improvement areas

Hero chart lacks a legend; comparison table repeats 'Some plans: no limit' across 22 rows.
Two failing accessibility audits: insufficient contrast and visible labels not matching accessible names.
Missing HSTS and DMARC; no published security audit or a11y/WCAG statement.
No monetization or longevity signal on a brand-new domain — trust ceiling for workflow use.

Design & Usability

The design is competent and purposeful: a two-card calculator (inputs left, teal result right) with a progress bar and percentage callout that answers the question in one glance. The 22-firm comparison table is the real substance, though it drowns in repeated 'Some plans: no limit' cells and a hero chart with four unlabeled colors. Usability is the stronger half — no signup, clear microcopy ('Use the best day from this calculation period'), a 'What if?' preview for hypothetical days, and presets linked to each firm's official rule source. For a single-purpose tool, signup-to-value is basically instant. The weak spots are the dense table and the lack of a guided first-run path for traders who don't yet know their plan's rule.

Speed & Security

Speed is the standout: Lighthouse mobile 97/100 with LCP 1.5s, CLS 0 and TBT 0ms, and a perfect 100 on desktop. The calculator runs client-side, so there's no heavy SPA or server round-trip to slow it down. Security is solid-but-unremarkable: HTTPS enforced with CSP, frame protection, X-Content-Type-Options, Referrer-Policy and Permissions-Policy (9/12 checklist points), but HSTS and DMARC are missing. There are no published audits or SOC 2 claims, which is normal for a free single-purpose tool. The privacy story is genuinely good — figures stay in the browser with no account connection — but the missing HSTS/DMARC are easy fixes left on the table.

Accessibility & Growth

Accessibility scores 97/100 on Lighthouse with a skip link and labeled fields, but two audits fail: insufficient color contrast and visible text labels not matching accessible names. There's no WCAG statement and the site is English-only, so automated coverage flatters it. Growth is the interesting question: the idea targets a real, specific fear — 'will my best day violate the consistency rule and get my payout denied?' — and the wedge is concrete. TradingView, Edgewonk and TradeZella track P&L but don't natively apply firm-specific consistency rules; this tool ships 22 firms and 97 plan presets linked to official sources. That's a defensible niche. The limit is ceiling: it's a free calculator with no obvious monetization or network effect, and the domain is brand new (registered 2026-10-11), so traction is unproven.

Conclusion

If you trade prop firm accounts and have ever squinted at a consistency rule wondering whether your best day just cost you a payout, this is the tool you wanted. It's free, it's fast, it doesn't ask for your email, and it links to the actual rule source instead of guessing. The flaws — contrast, label matching, a cluttered table, missing HSTS/DMARC — are the kind a weekend of polish fixes. The bigger unknown is longevity: a brand-new domain and no monetization signal mean you shouldn't build a workflow around it yet. But for the specific job of checking a consistency percentage before requesting a payout, it's already better than doing the math by hand or trusting a journal that doesn't know your firm's rules.

Suggestions for improvement

Add a legend to the hero bar chart so the 'best day' bar is visually obvious instead of one of four mystery colors.
Collapse or filter the 22-firm table by 'has a limit' to cut the repeated 'Some plans: no limit' noise.
Fix the two failing accessibility audits: raise contrast on muted text and align visible labels with accessible names.
Set HSTS and add a DMARC record — two quick wins to close the 9/12 security checklist gap.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	Prop Firm Consistency Calculator	TradingView	Edgewonk	TradeZella
Prop firm consistency rule calculator	Yes — best-day %, required profit, remaining gap	No — charting and basic risk tools only	No — tracks daily P&L, no firm rule logic	No — performance metrics, no consistency check
Firm-specific plan presets with official source links	Yes — 22 firms, 97 plan rules, official links	No	No	No
Free / no signup required	Free, no account, client-side	Free tier; paid plans for advanced tools	Paid subscription	Paid subscription
Trading journal / performance analytics	No — single-purpose calculator	Charting, limited journaling	Yes — full journal and analytics	Yes — journaling and analytics